1
# Copyright (C) 2005 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
"""Transport for the local filesystem.
19
This is a fairly thin wrapper on regular file IO."""
24
from stat import ST_MODE, S_ISDIR, ST_SIZE
28
from bzrlib.trace import mutter
29
from bzrlib.transport import Transport, register_transport, \
30
TransportError, NoSuchFile, FileExists
31
from bzrlib.osutils import abspath
33
class LocalTransportError(TransportError):
37
class LocalTransport(Transport):
38
"""This is the transport agent for local filesystem access."""
40
def __init__(self, base):
41
"""Set the base path where files will be stored."""
42
if base.startswith('file://'):
44
# realpath is incompatible with symlinks. When we traverse
45
# up we might be able to normpath stuff. RBC 20051003
46
super(LocalTransport, self).__init__(
47
os.path.normpath(abspath(base)))
49
def should_cache(self):
52
def clone(self, offset=None):
53
"""Return a new LocalTransport with root at self.base + offset
54
Because the local filesystem does not require a connection,
55
we can just return a new object.
58
return LocalTransport(self.base)
60
return LocalTransport(self.abspath(offset))
62
def abspath(self, relpath):
63
"""Return the full url to the given relative URL.
64
This can be supplied with a string or a list
66
assert isinstance(relpath, basestring)
67
return os.path.join(self.base, urllib.unquote(relpath))
69
def relpath(self, abspath):
70
"""Return the local path portion from a given absolute path.
72
from bzrlib.osutils import relpath
75
return relpath(self.base, abspath)
77
def has(self, relpath):
78
return os.access(self.abspath(relpath), os.F_OK)
80
def get(self, relpath):
81
"""Get the file at the given relative path.
83
:param relpath: The relative path to the file
86
path = self.abspath(relpath)
87
return open(path, 'rb')
89
if e.errno in (errno.ENOENT, errno.ENOTDIR):
90
raise NoSuchFile('File or directory %r does not exist' % path, orig_error=e)
91
raise LocalTransportError(orig_error=e)
93
def put(self, relpath, f):
94
"""Copy the file-like or string object into the location.
96
:param relpath: Location to put the contents, relative to base.
97
:param f: File-like or string object.
99
from bzrlib.atomicfile import AtomicFile
102
path = self.abspath(relpath)
103
fp = AtomicFile(path, 'wb')
105
if e.errno == errno.ENOENT:
106
raise NoSuchFile('File %r does not exist' % path, orig_error=e)
107
raise LocalTransportError(orig_error=e)
114
def iter_files_recursive(self):
115
"""Iter the relative paths of files in the transports sub-tree."""
116
queue = list(self.list_dir('.'))
118
relpath = queue.pop(0)
119
st = self.stat(relpath)
120
if S_ISDIR(st[ST_MODE]):
121
for i, basename in enumerate(self.list_dir(relpath)):
122
queue.insert(i, relpath+'/'+basename)
126
def mkdir(self, relpath):
127
"""Create a directory at the given path."""
129
os.mkdir(self.abspath(relpath))
131
if e.errno == errno.EEXIST:
132
raise FileExists(orig_error=e)
133
elif e.errno == errno.ENOENT:
134
raise NoSuchFile(orig_error=e)
135
raise LocalTransportError(orig_error=e)
137
def append(self, relpath, f):
138
"""Append the text in the file-like object into the final
141
fp = open(self.abspath(relpath), 'ab')
144
def copy(self, rel_from, rel_to):
145
"""Copy the item at rel_from to the location at rel_to"""
147
path_from = self.abspath(rel_from)
148
path_to = self.abspath(rel_to)
150
shutil.copy(path_from, path_to)
152
raise LocalTransportError(orig_error=e)
154
def move(self, rel_from, rel_to):
155
"""Move the item at rel_from to the location at rel_to"""
156
path_from = self.abspath(rel_from)
157
path_to = self.abspath(rel_to)
160
os.rename(path_from, path_to)
162
raise LocalTransportError(orig_error=e)
164
def delete(self, relpath):
165
"""Delete the item at relpath"""
167
os.remove(self.abspath(relpath))
169
raise LocalTransportError(orig_error=e)
171
def copy_to(self, relpaths, other, pb=None):
172
"""Copy a set of entries from self into another Transport.
174
:param relpaths: A list/generator of entries to be copied.
176
if isinstance(other, LocalTransport):
177
# Both from & to are on the local filesystem
178
# Unfortunately, I can't think of anything faster than just
179
# copying them across, one by one :(
182
total = self._get_total(relpaths)
184
for path in relpaths:
185
self._update_pb(pb, 'copy-to', count, total)
186
shutil.copy(self.abspath(path), other.abspath(path))
190
return super(LocalTransport, self).copy_to(relpaths, other, pb=pb)
193
"""See Transport.listable."""
196
def list_dir(self, relpath):
197
"""Return a list of all files at the given location.
198
WARNING: many transports do not support this, so trying avoid using
199
it if at all possible.
202
return os.listdir(self.abspath(relpath))
204
raise LocalTransportError(orig_error=e)
206
def stat(self, relpath):
207
"""Return the stat information for a file.
210
return os.stat(self.abspath(relpath))
212
raise LocalTransportError(orig_error=e)
214
def lock_read(self, relpath):
215
"""Lock the given file for shared (read) access.
216
:return: A lock object, which should be passed to Transport.unlock()
218
from bzrlib.lock import ReadLock
219
return ReadLock(self.abspath(relpath))
221
def lock_write(self, relpath):
222
"""Lock the given file for exclusive (write) access.
223
WARNING: many transports do not support this, so trying avoid using it
225
:return: A lock object, which should be passed to Transport.unlock()
227
from bzrlib.lock import WriteLock
228
return WriteLock(self.abspath(relpath))
231
class ScratchTransport(LocalTransport):
232
"""A transport that works in a temporary dir and cleans up after itself.
234
The dir only exists for the lifetime of the Python object.
235
Obviously you should not put anything precious in it.
238
def __init__(self, base=None):
240
base = tempfile.mkdtemp()
241
super(ScratchTransport, self).__init__(base)
244
shutil.rmtree(self.base, ignore_errors=True)
245
mutter("%r destroyed" % self)
added
removed
bzrlib/transport/local.py
